Subtract 1/45 from 70/42, Solve 1 28/42

Subtract 1/45 from 70/42

1^st number: 1 28/42, 2^nd number: 1/45

70/42 - 1/45 is 74/45.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
70/42 = 70 × 15/42 × 15 = 1050/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
1/45 = 1 × 14/45 × 14 = 14/630
Subtract the two like fractions:
1050/630 - 14/630 = 1050 - 14/630 = 1036/630
After reducing the fraction, the answer is 74/45
In mixed form: 129/45

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